I built my raised beds six inches deep using pine lumber when we first moved in. At the time, it made sense financially. But over the years, I learned some important lessons about soil depth, longevity, layout planning, weed pressure, and long-term cost that completely changed how I think about raised bed gardening.
If you’re building raised beds this year, this video could save you from making the same infrastructure mistakes I did.
👇 BUILD IT ONCE. BUILD IT RIGHT.
Before you build your raised beds, take the complete Raised Bed Masterclass here:
👉 https://join.nextlevelgardening.tv/raised-beds
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This course walks you step-by-step through:
• Choosing the right raised bed depth
• Planning layout for long-term workflow
• Calculating soil volume without overspending
• Installing irrigation properly
• Preventing weed pressure
• Designing a raised bed system that lasts for years
If you’re planning new beds this spring, this will save you money and prevent rebuilds down the road.
CHAPTERS
00:00 Why I Ripped Out My Raised Beds
00:42 Mistake #1 – Building Only 6 Inches Deep
02:37 Mistake #2 – Choosing Cheap Pine Lumber
04:03 Mistake #3 – Poor Long-Term Layout Planning
05:08 Raised Bed Masterclass (Build It Right)
06:17 Mistake #4 – Underestimating Weed Pressure
07:06 Mistake #5 – Only Looking at Upfront Cost
07:52 Why I’m Switching to Metal Beds
08:25 Think in Decades, Not Seasons
08:54 Next Video: Installing the New Beds
Whether you use wood or metal, the key is thinking long-term instead of just for one season.
If this video helps you avoid a rebuild later, hit subscribe — in a couple of weeks I’ll be sharing the full installation of the new beds, including the brand I chose, layout decisions, and why I’m rebuilding the system this way.
21 Comments
Great advice! I am poor and saved up for 2 years to be able to build one cedar bed. I built it and was happy until after the second year it rotted so badly the whole thing fell apart and the soil spilled out into the walkway. I had chosen cedar because all my research said that was the best option and it would last 5-7. This was around 10 years ago now and I wish I could go back in time and choose a different material and I could have saved a lot of money and time. Now I have Vego metal beds and love them.
Good timing. We did foot deep beds so I could sit on my garden buddy easier. Now, we want to rebuild garage. We might have to move beds, so now I have things to think about for new ones. We did line the inside of beds so they have survived pretty well. Pretty sure our irrigation system would make your head explode. We call it the Octopus running lines to soaker hoses in the beds. It does work, so we keep it. If we have to move beds though, Im seriously thinking metal. Rebuilding the wood will be expensive too cuz current beds were built with free wood from hubby's former job.
I bought some PVC raised beds from costco a few years ago. This year i am finally going to use them. Two 4×8 planters and one 4×4. Pretty excited and i know the PVC likely wont last but build them now and ill upgrade my setup later.
I made my raised bed out of 6 inch composite boards about 8 years ago. Last year I went up another 6 inches and connected the 2 layers with some metal brackets. The original boards are holding up fine.
I like the medal beds for their longevity but you can't sit on the edges ;ile you can with wodden beds. That is a gig deal for me. I hate looking around for my little garden seat all the time.
Talking about raised beds , I have metal ones . My question is how do I make my eggplant produce fruit ? I have a 3 year old plant that only produced 1 time , the first year . Now it flowers every year with lots of buds , but doesnt fruit . Please help .
I had 6" beds in SoCal, mainly to keep the paths well defined and the amended soil in place and not walked on. Now that I've retired to NC, I've gone with 1' and 2' tall metal beds. It's taken me several years to purchase them but I consider them an investment. They've made gardening so much easier and enjoyable for me. I also can't decide what to do in the walkways so I'm looking forward to seeing your new garden.
When I make timber raised beds (out of old pallets) I cover completely with 1200 grade dpm (the heavy duty kind used in consruction)
They should last years.
Though I did buy some 12" metal ones from temu cheaply
I didn't make any of those mistakes, but I filled my 30" deep beds with mix that drains way too well. Has to be watered every day, which also leaches out nutrients. In hot weather, sometimes 2x per day. I should have mixed in 50% of more screened top soil.
Because of where I live there NO getting rid of bindweed completely. It’s everywhere! For me the best thing to do is deal with what I’ve got left and what the birds give me when it pops up.
I made wooden raised beds 6 years ago and replaced a few last year since the wood started rotting. I hope to have all of them replaced with metal beds for longevity.
The 2x Pine boards I built my Mom's raised beds are just now starting to fail at around 25 years. In Southern California. No way I would use them here in Florida. They may not last 5 years.
I don't like the idea of using metal beds because I think they create a greater temperature fluctuation in the soil, at least around the edges, though I don't know how far into the bed.
Standard sleepers here in Australia are 200mm (8"). It will depend on the native soil, but my plan is double height, 400mm (16"), may hugel culture for the initial fill to save costs, keep topping up each year. Most roots really only need 300mm (12"), except for things like carrots, who want more more more.
The sleepers are only pine, but I coat them with a waterproofing coating (safe for potable water). The coated sleepers have been going for about 10 years now (sure, only a few twisted, but not many if you seal them quickly after purchase).
There are cement blocks called "Concrete Planter Wall Block" or "Retaining Wall block" found at Lowe's and HD that allow you to make a nice 8 x 4 area easily with 2 x 6 boards and some short 24" rebar.
They look like a little castle with 4 slots for wood & a hole in the center for the rebar to anchor down.
The cost is LOW.
You can make them 2 high. You can make them in different ways.
No nails or fasteners needed. They disassemble easily when you want to move them.
I have galvanized metal in different shapes and sizes. They've done well in Houston rain and humidity. Not so pretty, but truly functional!
Good things to consider when putting in raised beds! I've got 27 raised beds in my vegetable garden. Like you, I'm removing some beds and changing the setup because I put some of them too close together. I feel like a gymnast trying to harvest vegetables from them!
Can you do a detailed video about your paver retaining walls. I would love to do this in my yard.
Been there done that!!! I've replaced my beds about every 7 years….I should take the plunge and get some metal beds
There is a YT channel from canada that has plans for forms and sells molds to make concrete panels to make raised beds. Concrete panels are cheap and easy if your father taught you how to use basic tools.
Have you ever considered trying burned wood beds? There's a Japanese method where you burn the wood or carbonize the wood with a blowtorch, this will make it rot resistant, insect resistant, water resistant and it could last a life time.